mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-16 08:13:17 +00:00
9e52126f34
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Simon Glass <sjg@chromium.org>
86 lines
1.8 KiB
C
86 lines
1.8 KiB
C
/*
|
|
* (C) Copyright 2015 Google, Inc
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <clk.h>
|
|
#include <dm.h>
|
|
#include <errno.h>
|
|
#include <asm/test.h>
|
|
|
|
struct sandbox_clk_priv {
|
|
ulong rate;
|
|
ulong periph_rate[PERIPH_ID_COUNT];
|
|
};
|
|
|
|
static ulong sandbox_clk_get_rate(struct udevice *dev)
|
|
{
|
|
struct sandbox_clk_priv *priv = dev_get_priv(dev);
|
|
|
|
return priv->rate;
|
|
}
|
|
|
|
static ulong sandbox_clk_set_rate(struct udevice *dev, ulong rate)
|
|
{
|
|
struct sandbox_clk_priv *priv = dev_get_priv(dev);
|
|
|
|
if (!rate)
|
|
return -EINVAL;
|
|
priv->rate = rate;
|
|
return 0;
|
|
}
|
|
|
|
static ulong sandbox_get_periph_rate(struct udevice *dev, int periph)
|
|
{
|
|
struct sandbox_clk_priv *priv = dev_get_priv(dev);
|
|
|
|
if (periph < PERIPH_ID_FIRST || periph >= PERIPH_ID_COUNT)
|
|
return -EINVAL;
|
|
return priv->periph_rate[periph];
|
|
}
|
|
|
|
static ulong sandbox_set_periph_rate(struct udevice *dev, int periph,
|
|
ulong rate)
|
|
{
|
|
struct sandbox_clk_priv *priv = dev_get_priv(dev);
|
|
ulong old_rate;
|
|
|
|
if (periph < PERIPH_ID_FIRST || periph >= PERIPH_ID_COUNT)
|
|
return -EINVAL;
|
|
old_rate = priv->periph_rate[periph];
|
|
priv->periph_rate[periph] = rate;
|
|
|
|
return old_rate;
|
|
}
|
|
|
|
static int sandbox_clk_probe(struct udevice *dev)
|
|
{
|
|
struct sandbox_clk_priv *priv = dev_get_priv(dev);
|
|
|
|
priv->rate = SANDBOX_CLK_RATE;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct clk_ops sandbox_clk_ops = {
|
|
.get_rate = sandbox_clk_get_rate,
|
|
.set_rate = sandbox_clk_set_rate,
|
|
.get_periph_rate = sandbox_get_periph_rate,
|
|
.set_periph_rate = sandbox_set_periph_rate,
|
|
};
|
|
|
|
static const struct udevice_id sandbox_clk_ids[] = {
|
|
{ .compatible = "sandbox,clk" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(clk_sandbox) = {
|
|
.name = "clk_sandbox",
|
|
.id = UCLASS_CLK,
|
|
.of_match = sandbox_clk_ids,
|
|
.ops = &sandbox_clk_ops,
|
|
.priv_auto_alloc_size = sizeof(struct sandbox_clk_priv),
|
|
.probe = sandbox_clk_probe,
|
|
};
|